Periodic Trends and Classification

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which element has the highest electronegativity in the periodic table?

Back

Fluorine (F) has the highest electronegativity.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom.

Front

How does atomic size change across a period in the periodic table?

Back

As you move across a period, atomic size decreases due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is the trend of atomic radius down a group in the periodic table?

Back

Atomic radius increases down a group due to the addition of electron shells.

Front

Which element has the lowest electronegativity in Period 3?

Back

Sodium (Na) has the lowest electronegativity in Period 3.

Front

What is the relationship between atomic number and electronegativity?

Back

Generally, electronegativity increases with increasing atomic number across a period.

Front

What is the trend of ionization energy down a group?

Back

Ionization energy decreases down a group because the outer electrons are further from the nucleus and are less tightly held.

Front

Which element has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium has the largest atomic radius.

Front

What is the significance of the periodic table in understanding element properties?

Back

The periodic table organizes elements based on their atomic number and properties, revealing trends in electronegativity, ionization energy, and atomic size.